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io_uring: add helpers to decode the fixed file file_ptr

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Remove all the open coded magic on slot->file_ptr by introducing two
helpers that return the file pointer and the flags instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230620113235.920399-9-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-06-20 13:32:35 +02:00 • committed by Jens Axboe
commit 4bfb0c9af8
4 changed files with 27 additions and 24 deletions
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22
io_uring/filetable.h
View file

@ -5,10 +5,6 @@
#include <linux/file.h>
#include <linux/io_uring_types.h>
#define FFS_NOWAIT 0x1UL
#define FFS_ISREG 0x2UL
#define FFS_MASK ~(FFS_NOWAIT|FFS_ISREG)
bool io_alloc_file_tables(struct io_file_table *table, unsigned nr_files);
void io_free_file_tables(struct io_file_table *table);
@ -43,12 +39,24 @@ io_fixed_file_slot(struct io_file_table *table, unsigned i)
return &table->files[i];
}
#define FFS_NOWAIT 0x1UL
#define FFS_ISREG 0x2UL
#define FFS_MASK ~(FFS_NOWAIT|FFS_ISREG)
static inline unsigned int io_slot_flags(struct io_fixed_file *slot)
{
return (slot->file_ptr & ~FFS_MASK) << REQ_F_SUPPORT_NOWAIT_BIT;
}
static inline struct file *io_slot_file(struct io_fixed_file *slot)
{
return (struct file *)(slot->file_ptr & FFS_MASK);
}
static inline struct file *io_file_from_index(struct io_file_table *table,
int index)
{
struct io_fixed_file *slot = io_fixed_file_slot(table, index);
return (struct file *) (slot->file_ptr & FFS_MASK);
return io_slot_file(io_fixed_file_slot(table, index));
}
static inline void io_fixed_file_set(struct io_fixed_file *file_slot,